Winding-clutch for watches.



G. F. EBERHARD.

WINDING CLUTCH FOR WATCHES.

APPLICATION FILED JAN.2. m4. RENEWED MAY 8. 1915.

Patented June 29, 1915.

. mmmmm THE NORRIS PETERS 60., PHDT -LITHQ, WASHINGTON, D. C.

a duc'lejdiat small expense;

' v tionfl-l form;thelcliitchlinisectlons; so that ,,c G O1aGr-FPE@HAR; United States, residing at 1 v v titan f at 1" lrenton;Nje'ifv' Jersey,'}have invented certainfl '5; new 'ttl'ld;,11S6f111gImpl'QYemellilsfiItWijlding- Clutches for Watches, of which the, follow; I

' ingis a'specification. o

-l g th o ject fy aria-sear tetra Gvi de a winding; clutch to watchesf and like aq' lim rr instruments which; can" cr nt th, ,iil eadbtw ti hewn n ssfu l-y mp y ;i e wag the two ends whichare-tobe toothed fcan be i subj ected to the swaging operations}withnt i bi ity'iofid o t g the r r e 1 be r t cnt tee'th ;because "w i elltting operation is employe b l' lj 19ft 0n a teeth whichim st' -f 0 B i an ter. Swaged teethiare; uniform, freel, fron1 f'swaging tool.

p'anyingjdrawiiigs ill ilw ialTl lingjgthej' parts ,of lifig' separated ;,?Figs.

my invention composed :of two pieces; and

' 1 I A, y g cliitcm' thisis producedcall in"one' piece a mm w si W o vwewsfir J In carrymgyout my nyenfon lliitilize at '--swa lng a ti to ipr v 'desx eaclut h additional operation. Then again out teeth; areirregular,:due'to the-{wearing of the-cut v t g pieces, the center, piece '.haying a flaiigefi, burs; can be rapidly made and are superior in use to cut teeth because'o f the polishing andco nsolidati'ng effect onthe metal of the U o t iwhichfcarry the teeth: lThecenterfpiece is provided with a cylindrical opening therethro g le he weed ri ers, are Pre- .yided, with openings rectangular in a cross section to{ fit the winding stem,

Thefinvention i the accomand 3, are respectivelyff'a sectional. view and plan. iew 1 of f'ranother "form of winding clutchcoinposedoi three pieces; Fig. '3 is a View of the'flparts 'of-- Fig '3 separated from; "each otherjjFig. lyisfa se ctional view, and v1 *Fig; f is' afplany'view of another form of g Fig; '4 shows these pieces in side-@elevation, I s p m bac themfgjs gtional"View fof notherform'bf my in ntion re erring to Fig. 1, :the olid at cfwi is f waste-,-irgrafidmomm. H i

ass ss -ewes YQ Ki-I 1 s??? 11mm f Ilettersfateijtk jPateiited'QTuneZQ, 1915. i 14;, se ial; no; 809,965.] new my 8, 1915. serial n gagsoo,

With-the" mottled ,the Emirate ferential groove and with an aXiall opeI1if1g sary, approximately' eighteen in number.

; rectangular cross section; and produce ngthls clutchlmany. operations are neces-J in separate pieces,i;these pieces having the clutchfand crownteeth formed; therein at 6, 6 a ndone of thepieceshaving a flange 7 and a' socket 8 toflreceive areduced cylin- 'drilcal portion 9 on the other piece, this other piece being shoulderedsatlltl to make a close joint; withthe surface of theflangeQfl Each of these pieces is providedtwithflah axial opening rectangular in'icro'ssfsection, as shown 11'1 F1g. 2 In form ng" the two pieces-{they are produced an automatic machine in the general form illustrated then each piece is subjected to a sw'aging in f -,swaging dies: to produce the teeth. {The fiange Yu is intended to afford means for eh; I-- gagement with the operating lever which,

shifts the clutch.

II,1 F the clutch of and reduced cylindrical endsorprojectionsfl 11 I to fifiQWithiIl sockets formedongthe ad 5 5 jacent, ehds of the "endYporti' nsIIIZlaid 113 for engagement with the operating lever a circumferential"groove'7 is provided by forming and uniting the pieces in the relation shown, one piece having a' reduced extensionl l fitting in a socket 15 of the other piece andextending to near the point where theteeth -are ,formed. Both of these pieces have ani axial opening rectangular in cross section -andythe teeth may be swaged on both of these pieces and the squareiopening' may be punched through the member 16.

Fig. 5 shows the clutch made up of a cylindrical center member 17 and the two'end members 18, 19, of larger external diameter.

Each of these rnembersisprovided' with a pieces and 'Whe S Qmb 9 ,as[" 

